The avalanche struck before rescuers could arrive.
Australia's foreign affairs department is providing consular assistance to the teenager's family.
Germany has deployed troops to rescue locals trapped in their homes following heavy snowfall in the town of Berchtesgaden in the Bavarian Alps, not far from the Austrian border, German media reported.
Several railway lines in the Alps were closed because of the snow, lorries and cars got stuck for hours on a highway in south-western Germany.
The Austrian minister responsible for tourism, Elisabeth Koestinger, said that "in most skiing areas, there is no reason for concern at present if people keep to the rules and don't leave the secured slopes".
More heavy snow is expected in the coming days - as much as 120cm of fresh snow in Austria by Thursday.
A man makes his way at the early morning after heavy snow fall in Munich, Germany, Thursday, Jan. 10. Snow was causing problems in other parts of Europe, even in Norway's Arctic Svalbard archipelago.